PLATE XXXV. 



FIG. ^.-Horizontal prep ration "I tin tail .,f the tadpole treated with chloride of gojd. a. Capillary blood-vessel. 

 b. Coarse iion-iiieUullated nerve trunks, c. Fine iitm-uiedullated nerve fibres, d. Minute flbrils of the ultimate sub- 

 epithelial network, in which cells ami nuclei, <, are scattered. In one part, uf the preiiratkm the surface epithelium 

 is left, which shows the relate e si/e of the meshes of the sub-epithelial network, p. So. (Oc., 3 ; Obj., 7. Tube not 

 drawn out.) 



